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CC: "ken@elecsyn.com" , "Reid, John (Oji Fibre Solutions)" , Peter Clark , Rod Macdonald , RossGMail , "hanimamiruthm@gmail.com" Sender: "piclist-bounces@mit.edu" Date: Fri, 3 Apr 2020 23:55:07 -0700 Subject: [EE]:: Interesting LiIon battery - 25, 000 cycle life, -30C operation, 20C charge and discharge, 5 x LiIon power density. . Thread-Topic: [EE]:: Interesting LiIon battery - 25, 000 cycle life, -30C operation, 20C charge and discharge, 5 x LiIon power density. . Thread-Index: AdYKT4YjjjvT3OleSaueYYzPbjazFA== Message-ID: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.208.49 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.208.49; helo=mail-ed1-f49.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=QmKaLiKs0tvYVhWDBFKZU9HDWpDttq4lphFjvOJUaRY=; b=RrPhzDRN1zGJY5vJKWqfQ3GlurYa/zynAkKWdUmK6NPiOz7KIojH0aAlYNPdWSaEXU vLuq/sfZYLWl8XkSgRbbaxmI4rFzAtL+w8gaFnV9sEsWqLTnrqAzyy4fm5m32dIuoZav DM6ZJkStd1hS+3Np0E6UoWc07U9uNnfpiLGxiAr9TVLeQ0nfw2NP2Wv2utHMqTw6gUJJ xkmzGEDKek71d6exqaH3if76LTJBuq9qGkxFPpNpV/PTgd0JyNydgL4ewm/pS+v3i8hq f5RsikRIf5EQD1oFOwqSXqFkFaLrstDuAz2hwNLSc+G1Ljp4Txp7OMkbazlMCYUljqWC bfVw== authentication-results: spf=pass (sender IP is 209.85.208.49) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com;mit.edu; dmarc=pass action=none header.from=gmail.com;compauth=pass reason=100 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:aa7:d9cb:: with SMTP id v11mr10577249eds.206.1585983344994; Fri, 03 Apr 2020 23:55:44 -0700 (PDT) x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 A liIon battery with 25,000 cycle life, -30C operation, 20C charge and discharge, and 5x usual LiIon power density sounds highly attractive. Add low energy density, tiny capacities, VERY large cost/mAh, .... and it's not so attractive. But they may still have a place in specialist equipment. The cycle life implies an ~=3D 75 year lifetime at 1 cycle/day. Whether there are calendar life issues is unknown. This is a Stack Exchange Q&A with an answer by me. I had not met these cells before I saw this question - my answer is based on LiIon experience and the available data. https://electronics.stackexchange.com/q/490846/3288 Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .